Drill-frame



(No Model.)

8 2 Shets-Sheet 1. P. BROADBOOKS-- DRILL FRAME., No. 588,712. Patented Aug. 24,1897.

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WITNESSES (No Model.) vzsheets-slueet 2.

' P. BROADBOOKS.

DRILL FRAME No. 588,712.y Pa'tentedAug. 24,1897.

WITNESSES www lATTORNEY UNiTnD STATES PATENT OFFICE.

PETR BROADBOOKS, OF BATAVIA, NEWT YORK.

DRILL-FRAME.-

SPECIFICATION forming part of Letters Patent No. 588,712, dated August 24, 1897.

' Application inea october 26.1896. serai No. 609,766. (No model.)

T0 all whom it may concern.-

Be it' known that I, PETER BRoADBooKs, a citizen of the United States, residing at Batavia, in the county of Genesee and State of New York, have invented a certain new and useful Improvement inDrill-Frames,of which the following is a specification.

My invention relates to a new and useful improvement in drill-frames, and has for its object to so design and construct a device of this description that it may be used either as a bench-drill, brace-drill, clamp-drill, or clamp, and which will be exceedingly simple in construction, cheap in cost of manufacture, and effective in operation.

With these ends in view this inventionconsists in the detailsof construction and combination of elements hereinafter set forth and then specically designated by the claims.

In order that those skilled in the art to which this invention appertains may understand how to make and use the same, its construction andoperation will now be described in detail, referring to the accompanying drawings, forining a part of this specification, in which- Figure l is an elevation of my improvement when utilized as a bench-drill; Fig-2, a vertical section of the drill-frame; Fig. 3, a section at the line .oc x of Fig. l; Fig. 4, an elevation of my improvement when removed from the upright and utilized as aclamp-drill.

In carrying out my invention yas here embodied, A represents thedrill-frame, which is so cast as to provide the head B, which is bored for the reception of the spindle O. This head is cut away at D for the reception of the beveled pinion E, which is splined to the spindle C so as to revolve therewith, but permit the spindle to have a vertical movement independent of the pinion.

The spindle has projecting upward ther efrom a rod F, of less diameter than the spindle, and around this rod is placed the screw Gr'. This screw engages with theinternal threads H, which are formed in the upper end of the head, so that when the screw is revolved it will be raised or lowered, as the case may be, and since the lower end of said screw bears against the upper end of the spindle and the upper end thereof is confined by the collar I, which is pinned upon the rod, the

rod and spindle will also be raised or lowered.

A hand-wheel J is secured upon the blank portion of the screw for convenience in manipulating the same. K is a beveled gear which. meshes with the pinion E, and this gear has formed therewith an elongated hub L, which is journaled upon the stud M and is held thereon by the washer N and screw O, as clearly shown'in Fig. 2. A cap P is fitted upon the outer end of the hub L and held thereon by the set-screw Q, and this cap has secured thereto a crank-arm R, provided with the handle S for its operation. From this it will be seen that when the crank-arm is revolved the spindle C will also be revolved, but at a higher rateof speed, and a drill carried by the lower end of the spindle may be fed downward while the spindle is being revolved by the manipulation of vthe hand-wheel J.

S' represents a chuck which may be secured .upon the end of thespindle by the set-screw T, and this chuck is adapted to receive a suitable drill U.

Formed with the frame is an eye V,arranged to fit and slide upon the upright W and be held thereon in any adjustment by the setscrew X.` This upright is adapted to fit and slide within the eye of the bracket Y, which .bracket is arranged to be secured to a bench by bolts,and the upright maybe held in an yadj ustment within this bracket by a set-screw a.

When the device is to be used as abenchdrill, the upright is secured, as just described, in the bracket Y, and also a surface plate h vis fitted thereon and held in position by the set-screw (Z, as shown in Fig. l, and when thus fittedmy device is applicable for all uses to which a bench-drill may be put, the work being placed upon the surface plate.

When itis desired to use my device as a ,brace-drill, a chain fis secured to the projection g and passed around the work, as shown in Fig. 4, and engaged with the hook h, said projection and hook being cast with'the frame. When so secured to the work, the drill is fed by the hand-wheel, and I prefer that the spindle be then revolved by the cap IJ being secured to the collar Lwhen the crank-handle may be utilized for this purpose.

My improvement maybe utilized as a clampdrill by simply removing the upright from the IOO bracket Y and utilizing the surface plate to secure the device to the Work.

iVhen occasion requires, the chuck S' may be removed from the end of the spindle and a swiveled shoe substituted therefor,which will permit the device to be used as a clamp for holding work together or in position by securing the frame A and surface plate upon the upright and manipulating t-he hand-wheel J to force the shoe in contact with the desired surface.

It is obvious that myimprovement maybe used fora variety of purposes not here set forth, and I therefore donot wish to limit myself to the uses here described.

Having thus fully described my invention, what I claim as new and useful is- 1. In combination, a frame, a head formed therewith, said head having a cut-away portion, a spindle fitting within the head, a screw surrounding the rod and engaging with the threads formed in the upper end of the head, a collar secured to the rod and confining the screw, a hand-wheel for revolving the screw,

a pinion splined upon the spindle, a bevel` gear meshing with said pinion, a cap secured to the hub of the gear, a'projectionhaving an eye and another projection having a hook secured to the head and a chain `adapted to be secured to the projections, substantially as described.

2. In combination, an upright, a frame having an eye slidable on the upright, a head formed with said frame, said head having a cut-away portion, a spindle iitting within the head, a screw surrounding the rod and engaging the threads formed in the upper end of the head a collar secured to the rod and connin g the screw, a hand-wheel for revolving the screw, apinion splined upon `the spindie, a bevel-gear `meshing with said pinion, a cap secured to the hub of the gear, a projection having an eye and another projection havin ga hook secured to the head and a chain adapted to be secured to the projections,sub stantially as described.

In testimony whereof I hav-e hereunto :a-ffixed my signature in the prese-nce of twosubscribing witnesses.

S. S. WILLIAMSON, W. E. WEBSTER. 

